Kdo(a2-4)[Gro(a1-2)Gro(a1-3)[Glc(b1-4)[GalNAc(a1-3)GalNAc(b1-3)Gal(a1-4)Gal(b1-4)Glc(b1-6)]Gro(a1-6)Glc(b1-4)]Gro(a1-5)]Kdo(a2-